Transport of Water

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  • Transport of Water
    • Osmosis
      • the net movement of water molecules from a high water potential     to a low water potential through a partially permeable membrane
      • occurs until water potential is the same on both sides of the membrane
    • Solute - a solid that dissolves in a liquid
    • Solvent - a liquid that dissolves solids
    • Solution - a liquid containing dissolved solids
    • Cells Response
      • Animal Cells
        • In pure water, water will move into the cell by osmosis
          • Cell bursts open and become haemolysed
        • Concentrated sugar solution, water will move out of the cell by osmosis
          • Cell becomes crenated
        • All -animal Camels -cells Like -lose Werewolf -water     Cream-crenated When - water Growing - gained      Hair-haemolysed
      • Plant Cells
        • In pure water, water will move in via osmosis
          • Cells becomes Turgid - cell wall prevents bursting
        • In concentrated sugar solution, water will move out by osmosis
          • Cell  becomes Plasmolysed as membrane  pulls away from wall
        • Parrots -Plant Can -Cells Limp -lose Whilst -water Playing -  Plasmolysed   Games-gain   With-water     Turtles - Turgid
    • Water potential
      • measured in kiloPascals (kPa)
      • Pure water has potential of 0kPa
        • Lower water potential = negative value
          • So  the more negative the number, the more concentrated the solution


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